The President of Bangladesh is the Commander-in-chief of the military, the Ministry of Defence (MoD) is the principal administrative organization by which military policy is formulated and executed. The MoD is headed by the Minister of Defence, a civilian and member of cabinet; the post is usually held by the Prime Minister of Bangladesh, who also serves as the President's second-in-command of the military.[citation needed] To coordinate military policy with diplomacy both the President and the Prime Minister are advised by a six-member advisory board, three Chiefs of Staff, which includes the head of each of the regular services, Principal Staff Officer of the Armed Forces Division, and Military Secretaries to the President and the Prime Minister. The Director Generals of the NSI, the DGF